package com.itheima.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.itheima.common.R;
import com.itheima.entity.User;
import com.itheima.service.UserService;
import com.itheima.utils.SMSUtils;
import com.itheima.utils.ValidateCodeUtils;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpSession;
import java.util.Map;
import java.util.concurrent.TimeUnit;

@RestController
@RequestMapping("/user")
@Slf4j
public class UserController {
    @Autowired
    private UserService userService;
    @Autowired
    private StringRedisTemplate redisTemplate;

    /**
     * 发送验证码
     *
     * @param user
     * @param session
     * @return
     */
    @PostMapping("/sendMsg")
    public R<String> sendMsg(@RequestBody User user, HttpSession session) {
        //获取手机号
        String phone = user.getPhone();

        if (StringUtils.isNotEmpty(phone)) {
            //生成4位随机验证码
            String code = ValidateCodeUtils.generateValidateCode(4).toString();
            log.info("验证码={}", code);

            //调用阿里云提供的短信服务API完成发送短信
//            SMSUtils.sendMessage("","SMS_278026022",phone,code);

            //将生成的验证码保存到session
//            session.setAttribute(phone, code);
            //将生成的验证码保存到redis
            redisTemplate.opsForValue().set(phone,code,5, TimeUnit.MINUTES);
            return R.success("手机验证码短信发送成功");
        }
        return R.error("短信发送失败");
    }

    /**
     * 移动端用户登录
     *
     * @param map
     * @param session
     * @return
     */
    @PostMapping("/login")
    public R<User> login(@RequestBody Map map, HttpSession session) {

        //获取手机号
        String phone = (String) map.get("phone");
        //获取验证码
        String code = (String) map.get("code");
        //从session获取保存的验证码
//        String attribute = (String) session.getAttribute(phone);
        //从redis获取保存的验证码
        String attribute = redisTemplate.opsForValue().get(phone);
        //进行验证码的比对（页面提交的验证码和session中保存的验证码）
        if (attribute != null && attribute.equals(code)) {
            //如果能够比对成功，说明登录成功
            LambdaQueryWrapper<User> lqw = new LambdaQueryWrapper<>();
            lqw.eq(User::getPhone, phone);
            //判断当前手机号对应的用户是否为新用户，如果是新用户就完成自动注册
            User user = userService.getOne(lqw);
            if (user == null) {
                User user1 = new User();
                user1.setPhone(phone);
                userService.save(user1);
            }
            session.setAttribute("user",user.getId());
            //如果用户登录成功，删除Redis中缓存的验证码
            redisTemplate.delete(phone);
            return R.success(user);
        }


        return R.error("登录失败");
    }

    @PostMapping("/loginout")
    public R<String> logout(HttpSession session){
        session.removeAttribute("user");

        return null;
    }
}
